As recently as 2021, GM "all but eliminated" hybrids from its future product plans, reports the New York Times. "But then a funny thing happened." Car shoppers balked at the high prices of fully electric models and the challenges of charging them. In the last few years, sales of electric vehicles have grown at a much slower rate than automakers once expected. And hybrids have stepped in to fill the gap, accounting for a large and growing share of new car sales... In the first three months of this year, hybrids — including cars that can and cannot be plugged in — made up about 14 percent of all light vehicles sold in the United States, according to the Department of Energy. That was around twice the market share of fully electric vehicles in that period...

Several automakers are slowing the introduction of new electric vehicles, and have accelerated development of new hybrids.
Robb Report looks at the current status of hybrids — and a possible future: "The charging infrastructure in most countries is not yet mature enough to support convenient mass adoption of battery-electric vehicles, and in some territories never will be," says Jonathan Hall, head of research and advanced engineering at U.K.-based consulting group Mahle Powertrain....

Porsche, active in this space since 2010, just hybridized its iconic 911 for this model year. Lamborghini also joined the trend with the debut of its 1,000 hp Revuelto hybrid in 2023. "The company doesn't plan to give up the internal-combustion engine anytime soon," says CTO Rouven Mohr. "We are also considering synthetic fuels to keep ICE vehicles running after 2030."

Hall concurs: "With the emergence of bio-based and even fully synthetic fuels, the link between the ICE and climate change can be broken." Combined with the development of better batteries, this progressive hybrid model could offer the best of both worlds for years to come.

"The carbon cost of asking an artificial intelligence model a single text question can be measured in grams of CO2..." writes the Washington Post. And while an individual's impact may be low, what about the collective impact of all users?

"A Google search takes about 10 times less energy than a ChatGPT query, according to a 2024 analysis from Goldman Sachs — although that may change as Google makes AI responses a bigger part of search." For now, a determined user can avoid prompting Google's default AI-generated summaries by switching over to the "web" search tab, which is one of the options alongside images and news. Adding "-ai" to the end of a search query also seems to work. Other search engines, including DuckDuckGo, give you the option to turn off AI summaries....

Using AI doesn't just mean going to a chatbot and typing in a question. You're also using AI every time an algorithm organizes your social media feed, recommends a song or filters your spam email... [T]here's not much you can do about it other than using the internet less. It's up to the companies that are integrating AI into every aspect of our digital lives to find ways to do it with less energy and damage to the planet.
More points from the article:

• Two researchers tested the performance of 14 AI language models, and found larger models gave more accurate answers, "but used several times more energy than smaller models."

• The data centers hosting AI models "can devour more electricity than entire cities."

• "Keeping those computers cool uses freshwater — about one bottle's worth for every 100 words of text ChatGPT generates."

French President Emmanuel Macron urged Europe to reassert itself as a global space power, warning that France risks being sidelined in the low Earth orbit satellite market dominated by players like SpaceX and China. Phys.Org reports: Macron spoke at the Paris Air Show in Le Bourget outside the French capital a day after France more than doubled its stake in satellite operator Eutelsat, the EU rival to Elon Musk's Starlink. Macron called for more investment as the European space industry struggles to remain competitive in the face of US and Chinese rivals. "SpaceX has disrupted the market, Amazon is also getting involved. China is not far behind, and I think we all need to be very clear-headed," Macron said. Europe must become "a space power once again, with France at its heart," he said. He warned that Europeans were "on the verge of being completely" squeezed out of the low Earth orbit (LEO) satellite constellation market.

Macron said France and its partners should not be reliant on non-European constellations in low orbit, calling it "madness." He called non-European players to team up with France. "This must be the solution for our major strategic partners in the Gulf, India, Canada and Brazil," he said. "We really need to succeed in increasing our collective investment effort," Macron added, noting the importance of private investors and public-private collaboration. He also said France planned to organize a space summit in early 2026 to "mobilize our public and private partners across the globe."

An anonymous reader shares a report: At tens of thousands of shoreline cleanups across the United States in recent years, volunteers logged each piece of litter they pulled from the edges of lakes, rivers and beaches into a global database. One of the most common entries? Plastic bags. But in places throughout the United States where plastic bags require a fee or have been banned, fewer bags end up at the water's edge, according to research published this week in Science.

Lightweight and abundant, thin plastic bags often slip out of trash cans and recycling bins, travel in the wind and end up in bodies of water, where they pose serious risks to wildlife, which can become entangled or ingest them. They also break down into harmful microplastics, which have been found nearly everywhere on Earth. Using data complied by the nonprofit Ocean Conservancy, researchers analyzed results from 45,067 shoreline cleanups between 2016 to 2023, along with a sample of 182 local and state policies enacted to regulate plastic shopping bags between 2017 and 2023. They found areas that adopted plastic bag policies saw a 25 to 47 percent reduction in the share of plastic bag litter on shorelines, when compared with areas without policies. The longer a policy was in place, the greater the reduction.

Turning recently closed coalmines into solar energy plants could add almost 300GW of renewable energy by 2030, converting derelict wastelands to productive use, according to a new report. From a report: In a first of its kind analysis, researchers from Global Energy Monitor (GEM) identified 312 surface coalmines closed since 2020 around the world, and 134 likely to close by the end of the decade, together covering 5,820 sq km (2,250 sq miles) -- a land area nearly the size of Palestine.

Strip mining turns terrains into wastelands, polluted and denuded of topsoil. But if they were filled with solar panels and developed into energy plants, the report claims, they could generate enough energy to power as big and power hungry a nation as Germany.

alternative_right shares a report from ScienceAlert: The colossal black hole lurking at the center of the Milky Way galaxy is spinning almost as fast as its maximum rotation rate. That's just one thing astrophysicists have discovered after developing and applying a new method to tease apart the secrets still hidden in supermassive black hole observations collected by the Event Horizon Telescope (EHT). The unprecedented global collaboration spent years working to give us the first direct images of the shadows of black holes, first with M87* in a galaxy 55 million light-years away, then with Sgr A*, the supermassive black hole at the heart of our own galaxy. [...]

Their results show, among other things, that Sgr A* is not only spinning at close to its maximum speed, but that its rotational axis is pointed in Earth's direction, and that the glow around it is generated by hot electrons. Perhaps the most interesting thing is that the magnetic field in the material around Sgr A* doesn't appear to be behaving in a way that's predicted by theory. M87*, they discovered, is also rotating rapidly, although not as fast as Sgr A*. However, it is rotating in the opposite direction to the material swirling in a disk around it -- possibly because of a past merger with another supermassive black hole. The findings have been detailed in three papers published in the journal Astronomy & Astrophysics. They can be found here, here, and here.

An anonymous reader quotes a report from the BBC: The Earth could be doomed to breach the symbolic 1.5C warming limit in as little as three years at current levels of carbon dioxide emissions. That's the stark warning from more than 60 of the world's leading climate scientists in the most up-to-date assessment of the state of global warming. [...] At the beginning of 2020, scientists estimated that humanity could only emit 500 billion more tonnes of carbon dioxide (CO2) -- the most important planet-warming gas -- for a 50% chance of keeping warming to 1.5C. But by the start of 2025 this so-called "carbon budget" had shrunk to 130 billion tonnes, according to the new study.

That reduction is largely due to continued record emissions of CO2 and other planet-warming greenhouse gases like methane, but also improvements in the scientific estimates. If global CO2 emissions stay at their current highs of about 40 billion tonnes a year, 130 billion tonnes gives the world roughly three years until that carbon budget is exhausted. This could commit the world to breaching the target set by the Paris agreement, the researchers say, though the planet would probably not pass 1.5C of human-caused warming until a few years later.

Last year was the first on record when global average air temperatures were more than 1.5C above those of the late 1800s. A single 12-month period isn't considered a breach of the Paris agreement, however, with the record heat of 2024 given an extra boost by natural weather patterns. But human-caused warming was by far the main reason for last year's high temperatures, reaching 1.36C above pre-industrial levels, the researchers estimate. This current rate of warming is about 0.27C per decade -- much faster than anything in the geological record. And if emissions stay high, the planet is on track to reach 1.5C of warming on that metric around the year 2030. After this point, long-term warming could, in theory, be brought back down by sucking large quantities of CO2 back out of the atmosphere. But the authors urge caution on relying on these ambitious technologies serving as a get-out-of-jail card. "For larger exceedance [of 1.5C], it becomes less likely that removals [of CO2] will perfectly reverse the warming caused by today's emissions," warned Joeri Rogelj, professor of climate science and policy at Imperial College London.

"Reductions in emissions over the next decade can critically change the rate of warming," he added. "Every fraction of warming that we can avoid will result in less harm and less suffering of particularly poor and vulnerable populations and less challenges for our societies to live the lives that we desire."

The daughter of a Seattle woman who died during the 2021 Pacific Northwest heatwave has filed the first wrongful death lawsuit directly linking fossil fuel companies to an individual's climate-related death.

Misti Leon is suing seven oil and gas companies, including ExxonMobil, Chevron, Shell and BP, claiming they caused her mother Juliana Leon's death from hyperthermia on June 28, 2021, when temperatures reached 108 degrees Fahrenheit. The lawsuit alleges the companies created a "fossil fuel-dependent economy" that resulted in "more frequent and destructive weather disasters and foreseeable loss of human life." Attribution science research determined the 2021 heatwave would have been "virtually impossible" without human-made climate change and was at least 150 times rarer without warming.

The case seeks damages and funding for a public education campaign about fossil fuels' role in planetary heating.

Swiss Re has identified extreme heat as a significant insurance threat in its latest annual report on emerging risks with the Zurich-based reinsurer noting that up to half a million people globally die from extreme heat effects each year. The death toll exceeds the combined impact of floods, earthquakes and hurricanes. Heat waves contributed to conditions that generated $78.5 billion in insured wildfire losses globally from 2015-2024, Swiss Re reported.

The Los Angeles wildfires this year could add up to $45 billion in insured losses, according to UCLA Anderson School of Business estimates. The insurance industry has historically underestimated heat-related costs because damages spread across multiple policy types rather than appearing as a single category. Construction firms face rising medical insurance and workers compensation claims when outdoor workers suffer heat injuries, plus potential liability for inadequate cooling breaks.

NPR looks at the "high-quality, climate-friendly apartments" in Vienna, asking if it's a model for addressing both climate change and the housing crisis.

About half the city's 2 million people live in the widespread (and government-supported) apartments, with solar panels on top and very thick, insulated walls that reduce the need for heating and cooling. (One resident tells NPR they don't even need an air conditioner because "It's not cold in winter times. It's not hot in summer times.") Vienna council member Nina Abrahamczik, who heads the climate and environment committee, says as the city transitions all of its buildings off planet-heating fossil fuels, they're starting with the roughly 420,000 housing units they already own or subsidize.... As Vienna makes an aggressive push to completely move away from climate-polluting natural gas by 2040, it's starting with much of this social housing, says Jürgen Czernohorszky, executive city councilor responsible for climate and environment. City-owned buildings are now switching from gas to massive electric heat pumps, and to geothermal, which involves probing into the ground to heat homes. Another massive geothermal project that drills even deeper into the earth to heat homes is also underway.

The city is also powering housing with solar energy. As of a year and a half ago, Vienna mandates all new buildings and building extensions to have rooftop solar. And Vienna's older apartment buildings are getting climate retrofits, says Veronika Iwanowski, spokesperson for Vienna's municipal housing company, Wiener Wohnen. That includes new insulation, doors and windows to prevent the city's wind from getting in the cracks. The increase in energy efficiency and switching from gas to renewables doesn't just have climate benefits from cutting fossil fuel use. It also means housing residents are paying less on electric bills...

With city-subsidized housing, housing developers can compete to get land and low-interest loans from the city. Officials say those competitions are a critical lever for climate action. "As we can control the contents of the competitions, we try to make them fit to the main goals of the city," says Kurt Hofstetter, city planner for Vienna, "which is of course also ecological...." Now the housing judges give out points for things like increased energy efficiency, green roofs and sustainable building materials... Now the climate innovations in subsidized housing are inspiring the private market as well, Hofstetter says...
The article notes that most of the city's funding is provided in the form of low-interest loans, according to a researcher at the Austrian Federation of Limited-Profit Housing Associations. (And the average social housing rents are about $700 for a large one-bedroom apartment, says Gerald Kössl, researcher at the Austrian Federation of Limited-Profit Housing Associations.)

Space may be the perfect place to study cancer — and someday even treat it," writes Space.com: On Earth, gravity slows the development of cancer because cells normally need to be attached to a surface in order to function and grow. But in space, cancer cell clusters can expand in all directions as bubbles, like budding yeast or grapes, said Shay Soker, chief science program officer at Wake Forest's Institute for Regenerative Medicine. Since bubbles grow larger and more quickly in space, researchers can more easily test substances clinging to the edge of the larger bubbles, too. Scientists at the University of Notre Dame are taking advantage of this quirk to develop an in-space cancer test that needs just a single drop of blood. The work builds on a series of bubble-formation experiments that have already been conducted on the ISS. "If cancer screening using our bubble technology in space is democratized and made inexpensive, many more cancers can be screened, and everyone can benefit," said Tengfei Luo, a Notre Dame researcher who pioneered the technology, speaking to the ISS' magazine, Upward. "It's something we may be able to integrate into annual exams. It sounds far-fetched, but it's achievable...."

Chemotherapy patients could save precious time, too. In normal gravity, they typically have to spend a half-hour hooked up to a needle before the medicine begins to take effect, because most drugs don't dissolve easily in water. But scientists at Merck have discovered that, in space, their widely used cancer drug pembrolizumab, or Keytruda, can be administered through a simple injection, because large crystalline molecules that would normally clump together are suspended in microgravity... Someday, microgravity could even help patients recovering from surgery heal faster than they would on Earth, Soker added. "Wound healing in high pressure is faster. That's the hyperbaric treatment for wounds...."

For the Wake Forest experiment, which is scheduled to launch next spring, scientists will cut out two sections of a cancer tumor from around 20 patients. One sample will stay on Earth while the other heads to the ISS, with scientists observing the difference. The testing will be completed within a week, to avoid any interference from cosmic radiation. If successful, Soker said, it could set the stage for diagnostic cancer tests in space available to the general population — perhaps on a biomedical space station that could launch after the planned demise of the ISS. "Can we actually design a special cancer space station that will be dedicated to cancer and maybe other diseases?" Shoker asked, answering his question in the affirmative. "Pharmaceutical companies that have deep pockets would certainly support that program."

Will an expansion of biofuels increase greenhouse gas emissions, despite their purported climate benefits? That's the claim of a new report from the World Resources Institute, which has been critical of US biofuel policy in the past.

Ars Technica has republished an article from the nonprofit, non-partisan news organization Inside Climate News, which investigates the claim. Drawing from 100 academic studies on biofuel impacts, the Institute's new report "concludes that [U.S.] ethanol policy has been largely a failure and ought to be reconsidered, especially as the world needs more land to produce food to meet growing demand." "Multiple studies show that U.S. biofuel policies have reshaped crop production, displacing food crops and driving up emissions from land conversion, tillage, and fertilizer use," said the report's lead author, Haley Leslie-Bole. "Corn-based ethanol, in particular, has contributed to nutrient runoff, degraded water quality and harmed wildlife habitat. As climate pressures grow, increasing irrigation and refining for first-gen biofuels could deepen water scarcity in already drought-prone parts of the Midwest...."

It may, in fact, produce more greenhouse gases than the fossil fuels it was intended to replace. Recent research says that biofuel refiners also emit significant amounts of carcinogenic and dangerous substances, including hexane and formaldehyde, in greater amounts than petroleum refineries. The new report points to research saying that increased production of biofuels from corn and soy could actually raise greenhouse gas emissions, largely from carbon emissions linked to clearing land in other countries to compensate for the use of land in the Midwest.

On top of that, corn is an especially fertilizer-hungry crop requiring large amounts of nitrogen-based fertilizer, which releases huge amounts of nitrous oxide when it interacts with the soil. American farming is, by far, the largest source of domestic nitrous oxide emissions already — about 50 percent. If biofuel policies lead to expanded production, emissions of this enormously powerful greenhouse gas will likely increase, too.

alternative_right shares a report from Phys.Org: A cosmic particle detector in Antarctica has emitted a series of bizarre signals that defy the current understanding of particle physics, according to an international research group that includes scientists from Penn State. The unusual radio pulses were detected by the Antarctic Impulsive Transient Antenna (ANITA) experiment, a range of instruments flown on balloons high above Antarctica that are designed to detect radio waves from cosmic rays hitting the atmosphere.

The goal of the experiment is to gain insight into distant cosmic events by analyzing signals that reach the Earth. Rather than reflecting off the ice, the signals -- a form of radio waves -- appeared to be coming from below the horizon, an orientation that cannot be explained by the current understanding of particle physics and may hint at new types of particles or interactions previously unknown to science, the team said. The researchers published their results in the journal Physical Review Letters.

"The radio waves that we detected were at really steep angles, like 30 degrees below the surface of the ice," said Stephanie Wissel, associate professor of physics, astronomy and astrophysics who worked on the ANITA team searching for signals from elusive particles called neutrinos. She explained that by their calculations, the anomalous signal had to pass through and interact with thousands of kilometers of rock before reaching the detector, which should have left the radio signal undetectable because it would have been absorbed into the rock. "It's an interesting problem because we still don't actually have an explanation for what those anomalies are, but what we do know is that they're most likely not representing neutrinos," Wissel said.

Meta has struck a new deal with geothermal startup XGS Energy to supply 150 megawatts of carbon-free electricity for its New Mexico data center. "Advances in AI require continued energy to support infrastructure development," Urvi Parekh, global head of energy at Meta, said in a press release. "With next-generation geothermal technologies like XGS ready for scale, geothermal can be a major player in supporting the advancement of technologies like AI as well as domestic data center development." The Verge reports: Geothermal plants generate electricity using Earth's heat; typically drawing up hot fluids or steam from natural reservoirs to turn turbines. That tactic is limited by natural geography, however, and the US gets around half a percent of its electricity from geothermal sources. Startups including XGS are trying to change that by making geothermal energy more accessible. Last year, Meta made a separate 150MW deal with Sage Geosystems to develop new geothermal power plants. Sage is developing technologies to harness energy from hot, dry rock formations by drilling and pumping water underground, essentially creating artificial reservoirs. Google has its own partnership with another startup called Fervo developing similar technology.

XGS Energy is also seeking to exploit geothermal energy from dry rock resources. It tries to set itself apart by reusing water in a closed-loop process designed to prevent water from escaping into cracks in the rock. The water it uses to take advantage of underground heat circulates inside a steel casing. Conserving water is especially crucial in a drought-prone state like New Mexico, where Meta is expanding its Los Lunas data center. Meta declined to say how much it's spending on this deal with XGS Energy. The initiative will roll out in two phases with a goal of being operational by 2030.

Shubhanshu Shukla will become the first Indian astronaut to visit the International Space Station as part of a four-person mission by Axiom Space launching from the U.S.. The mission will include 14 days aboard the ISS and over 60 scientific studies. The Guardian reports: He will be the third astronaut of Indian origin to reach orbit, following Rakesh Sharma, who was part of a 1984 flight onboard a Soviet Soyuz spacecraft, and Kalpana Chawla, who was born in India but became a US citizen and flew on two space shuttle missions, including the 2003 Columbia flight that ended in disaster when the spacecraft disintegrated, killing all seven astronauts onboard. "I truly believe that even though, as an individual, I am traveling to space, this is the journey of 1.4 billion people," Shukla was quoted as saying by the Hindu newspaper this year. Shukla said he hoped to "ignite the curiosity of an entire generation in my country."

India's department of space has called the trip a "defining chapter" in its ambitious space exploration program. The International Space Station mission (ISS) "stands as a symbol of a confident, forward-looking nation ready to reclaim its place in the global space race," the agency said before the launch. "His journey is more than just a flight -- it's a signal that India is stepping boldly into a new era of space exploration." New Delhi has paid more than $60m for the mission, according to Indian media reports. [...]

Shukla trained at the Yuri Gagarin Cosmonaut Training Center in Russia in 2020, before undertaking further training at the ISRO's centre in Bengaluru. He has said the journey aboard the Axiom Mission 4, and the expected 14 days on the ISS, will provide "invaluable" lessons to bring back home. Shukla will be led by the mission commander, Peggy Whitson, a former Nasa astronaut and an Axiom employee, and joined by the European Space Agency astronaut Slawosz Uznanski-Wisniewski, of Poland, and Tibor Kapu, of Hungary. They will conduct 60 scientific studies, including microgravity research, earth observation, and life, biological and material sciences experiments.

A mathematician on Reddit calculated that if all 8.2 billion humans were blended into a uniform goo, the resulting meatball would form a sphere just under 1 kilometer wide -- small enough to fit inside Central Park. ScienceAlert reports: "If you blended all 7.88 billion people on Earth into a fine goo (density of a human = 985 kg/m3, average human body mass = 62 kg), you would end up with a sphere of human goo just under 1 km wide," Reddit contributor kiki2703 wrote in a post ... Reasoning the density of a minced human to be 985 kilograms per cubic meter (62 pounds per cubic foot) is a fair estimate, given past efforts have judged our jiggling sack of grade-A giblets to average out in the ballpark of 1 gram per cubic centimeter, or roughly the same as water. And in mid-2021, the global population was just around 7.9 billion, give or take.

A group of 20 internationally renowned scientists have issued a strong warning against attempts to narrow the definition of "forever chemicals" in what they describe as a politically or economically motivated effort to weaken regulation of the potentially harmful chemicals. From a report: Per- and polyfluoroalkyl substances (Pfas) are a large group of synthetic chemicals used for their oil-, water- and stain-resistant properties in a range of consumer and industrial products from waterproof clothing and non-stick cookware to firefighting foams and electronics.

Their molecular structure makes them resistant to degradation, earning them the nickname "forever chemicals." In the last few years there has been growing awareness of the problems associated with Pfas, and a push for more stringent regulation, resulting in the banning of certain forms. A group of scientists are now raising the alarm about efforts, including by some individuals and groups in the International Union of Pure and Applied Chemistry (IUpac), to narrow the current international definition of Pfas in ways that could exclude certain chemical subgroups.

South Asia has warmed far more slowly than the rest of the world over the past four decades with temperatures rising just 0.09C per decade compared to 0.30C elsewhere on land, according to new climate research. Scientists believe this "warming hole" results from two factors that have masked the true impact of global warming: heavy aerosol pollution that reflects sunlight back to space and expanded irrigation that cools air through evaporation.

The protective effect is temporary and comes at a deadly cost. Air pollution currently kills between 2 million and 3 million people annually in South Asia, while extreme heat causes 100,000 to 600,000 deaths. As governments reduce pollution and groundwater depletion limits irrigation expansion, atmospheric scientists predict India will warm at twice the rate of the past 20 years. By 2047, the average Indian could experience a four-fold increase in dangerous heat stress days, threatening a region where only 10% of households have air conditioning.

The world's oceans are in worse health than realised, scientists have said today, as they warn that a key measurement shows we are "running out of time" to protect marine ecosystems. From a report: Ocean acidification, often called the "evil twin" of the climate crisis, is caused when carbon dioxide is rapidly absorbed by the ocean, where it reacts with water molecules leading to a fall in the pH level of the seawater. It damages coral reefs and other ocean habitats and, in extreme cases, can dissolve the shells of marine creatures.

Until now, ocean acidification had not been deemed to have crossed its "planetary boundary." The planetary boundaries are the natural limits of key global systems -- such as climate, water and wildlife diversity -- beyond which their ability to maintain a healthy planet is in danger of failing. Six of the nine had been crossed already, scientists said last year. However, a new study by the UK's Plymouth Marine Laboratory (PML), the Washington-based National Oceanic and Atmospheric Administration and Oregon State University's Co-operative Institute for Marine Resources Studies found that ocean acidification's "boundary" was also reached about five years ago.

"Replanting forests can help cool the planet even more than some scientists once believed, especially in the tropics," according to a recent announcement from the University of California, Riverside. In a new modeling study published in Communications Earth & Environment, researchers at the University of California, Riverside, showed that restoring forests to their preindustrial extent could lower global average temperatures by 0.34 degrees Celsius. That is roughly one-quarter of the warming the Earth has already experienced. The study is based on an increase in tree area of about 12 million square kilometers, which is 135% of the area of the United States, and similar to estimates of the global tree restoration potential of 1 trillion trees. It is believed the planet has lost nearly half of its trees (about 3 trillion) since the onset of industrialized society.
The Washington Post noted that the researchers factored in how tree emissions interacted with molecules in the atmosphere, "encouraging cloud production, reflecting sunlight and cooling Earth's surface." In a news release, the researchers acknowledge that full reforestation is not feasible... "Reforestation is not a silver bullet," Bob Allen, a professor of climatology at the University of California at Riverside and the paper's lead author, said in a news release. "It's a powerful strategy, but it has to be paired with serious emissions reductions."